Page 1. Name: _1)

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1 Name: _1) 4) 5) 6) 7) 8) 9) 1) Page 1 What Greek philosopher as the first perso to propose the idea that matter is made of tiy idividual particles called atoms? A) Democritus C) Dalto B) Bohr D) Rutherford I aciet Greece, it as proposed that matter is composed of earth, air, ater, ad fire, ad that diese elemets A) have similar physical properties C) are i cotiual motio B) have similar chemical properties D) are statioary I the early 19's, it as proposed that eergy may be absorbed or released from atoms i small, idivisible packets amed A) orbitals C) quata B) ucleos D) protos The developmet of the cadiode ray tube led to the discovery of hat subatomic particle? A) proto C) electro Q) positro D) eutro Experimetal evidece idicates that die ucleus of a atom A) has a egative charge B) cotais most of die mass of die atom C) has o charge D) cotais a small percetage of die mass of the atom Whe alpha particles are used to bombard gold foil, most of the alpha particles pass through udeflected. This result idicates diat most of the volume of a gold atom cosists of A) uoccupied space C) deuteros B) eutros D) protos Compared to die etire atom, the ucleus of die atom is A) larger ad cotais little of the atom's mass B) smaller ad cotais little of the atom's mass C) smaller ad cotais most of the atom's mass D) larger ad cotais most of the atom's mass Which particle has the leos/mass? A) a eutro C) a deutero B) a proto D) a electro Which of die folloig statemets Des/desc'bes a electro? A) It has a smaller mass dia a proto ad a positive charge. B) It has a greater mass dia a proto ad a positive charge. C) It has a greater mass tha a proto ad a egative charge. D) It has a smaller mass tha a proto ad a egative charge. What particle has a mass of approximately oe atomic mass uit ad a uit positive charge? A) a eutro C) a alpha particle B) a beta particle D) a proto

2 626 1 Page 2 11) 12) 15) 16) 18) 19) 2) 21) 22) What particle is electrically eutral? A) eutro C) electro B) positro D) proto What particle has approximately the same mass as a proto? A) eutro C) beta B) electro D) alpha Which to particles have approximately the same mass? A) eutro ad electro C) proto ad electro B) eutro ad deutero D) proto ad eutro Ho may protos are i the ucleus of a atom of beryllium? A) 9 B) 2 C) 5 D) 4 What kid of particle, he passed through a electric field, ould be attracted to the egative electrode? A) a eutro C) a alpha particle B) a beta particle D) a electro What kid of radiatio ill travel through a electric field o a pathay that remais uaffected by the field? A) a electro C) a alpha particle B) a gamma ray D) a proto What particle ill be attracted to the positive electrode i a electric field? A) a eutro C) a beta particle B) a positro D) a alpha particle Which particle has a egative charge? A) alpha particle C) beta particle B) eutro D) proto I a sample of pure copper, ai/atoms have A) a differet atomic umber, but the same umber of protos B) the same atomic umber ad the same umber of protos C) a differet atomic umber ad a differet umber of protos D) the same atomic umber, but a differet umber of protos A substace that is composed oly of atoms havig the same atomic umber is classified as A) a compoud C) a homogeeous mixture B) a elemet D) a heterogeeous mixture Which atom has the grea/es/uclear charge? A) Al B) Na C) Si D) Ar Which atom has the greij/es/uclear charge?

3 23) 24) 25) 2 What is the uclear charge of ad atom ith a mass of 23 ad a atomic umber of 11? Page 3 A) 34+ B) 23+ C) 12+ D) 11+ As a N a atom forms a N a+ io the umber of protos i its ucleus A)' decreases B) icreases C) remais the same A particle of matter cotais 6 protos, 7 eutros, ad 6 elecb'os. This particle must be a A) eutral carbo atom C) eutral itroge atom B) positively charged carbo io D) positively charged itroge io What is the symbol for a atom cotaiig 2 protos ad 22 eutros? 27) 28) Compared to a atom ofc12, a atom ofc14 bas A) feer protos B) more eutros What is the mass umber of the atom belo? C) more protos D) feer eutros 29) 3) 31) 3H 1 A) 1 B) 2 C) 3 D) 4 What is the mass umber of a atom that cotais 19 protos, 19 electros, ad 2 eutros? A) 39 B) 2 C) 19 D) 58 A atom of carbo14 cotais A) 8 protos, 6 eutros, ad 6 electros B) 6 protos, 6 eutros, ad 8 electros C) 6 protos, 8 eutros, ad 6 electros D) 6 protos, 8 eutros, ad 8 electros Ho may protos ad eutros is the ucleus of the atom belo composed of? _32) A) 53 protos ad 127 eutros C) 53 protos ad 74 electros B) 53 eutros ad 127 protos D) 53 protos ad 74 eutros The atomic mass of a elemet is defied as the eighted average mass of that elemefs A) least abudat isotope B) most abudat isotope C) aturally occumg isotopes D) radioactive isotopes 33) A sample of elemetxcotais 9. percet 3SXatoms, 8. percet 37Xatoms, ad 2. percet 38Xatoms. The average isotopic mass is closes/to A) 38 B) 3S C) 37 D) 32

4 626 1 Page 4 34) 35) Isotopes of the same elemet must also have the same A) umber of ucleos B) mass umber C) atomic umber D) umber of eutros 36) Which symbol represets a isotope of carbo? A) 12X B) 14X 5 7 C) 13X 6 D) 6% 4 37) 38) 39) 4) 41) 42) 43) Usually die te "kerel" icludes ouparts of die atom aceplthe A) valece electros C) eutros B) omital electros D) protos A atom of chlorie ad a atom of bromie have die same ) electroegativity C) umber of valece electros B) Lodo dispersio radius D) ioizatio eergy What is die atomic umber of a atom idi six valece electros? A) 12 B) 6 C) 8 D) 1 What is die atomic umber of a atom diat fos a io idi18 electros ad a chqe of2+? A) 3 B) 2 C) 18 D) 48 What is die total umber of valece electros i a atom ith a total of 13 protos? A) 1 B) 2 C) 3 D) 4 What is the total umber of valece electros i a atom ith the electro cofiguratio 285? A) 15 B) 8 C) 5 D) 2. A Ca2+ io differs from a CaO atom i that the Ca2+ io has A) feer electros C) more electros B) more protos D) feer protos Which of the folloig is the electrodot symbol for a atom ith a electro cofiguratio of 25?..... A).x. B).x. C).x: D).x:.... A atom has the electro cofiguratio 287. The electrodot symbol for this elemet is... A) X: B).x: C) :x: D) ) What is the electrodot symbol for a chlorie atom i the groud state?.... A) : CI : B) : CI : C) CI: D).a:.... x:

5 47) 48) 49) 5) 51) 52) 53) 54) 55) 56) 57) A) H B) I C) s What causes the emissio of radiat eergy that produces characteristic spectra1lies? A) gaua ray emissio from the ucleus B) movemet of electros to higher eergy levels C) eutro absorptio by the ucleus D) retur of electros to loer eergy levels Page 5 D) K The characteristic spectra1lies of elemets are caused he electros i a excited atom move from A) loer to higher eergy levels, releasig eergy B) loer to higher eergy levels, absorbig eergy C) higher to loer eergy levels, releasig eergy D) higher to loer eergy levels, absorbig eergy The greo/es/absorptio of eergy occurs as a electro moves from A) Is to 3s C) 4sto 3p B) 4dto 4s D) 3pto 3s \ Electro X ca chage to a higher eergy level or a loer eergy level. Which of the folloig statemets is true of electro A7 A) Electro Xemits eergy he it chages to a higher eergy level. B) ElectroXabsorbs eergy he it chages to a higher eergy level. C) Electro X absorbs eergy he it chages to a loer eergy level. D) Electro Xeither emits or absorbs eergy he it chages eergy level. A atom of hich elemet i the groud state has a complete outeost shell? A) Be B) He C) Hg D) H I a atom that has a electro cofiguratio of25, hat is the total umber of electros i its liiglles/eergy level? A) 8 B) 5 C) 7 D) 2 Which of the folloig is the electro cofiguratio of a atom i the groud state? A) 2711 B) 182 C) 272 D) 281 What is the electro cofiguratio of a fluorie atom i the groud state? A) 18 B) 29 C) 27 D) 287 Which of the folloig is the electro cofiguratio for Mg2+ ios? A) 282 B) 288 C) 22 D) 28 What is the electro cofiguratio of a calcium io (Ca2+) i the groud state? A) 2881 B) 2888 C) 288 D) 2882: 58) What is the electro cofiguratio of a oxyge io (2' I i the groud state? A) 26 B) 28 C), 17 D) 24 59) Which electro cofiguratio represets a atom i a excitoo state? A) 281 B) 271 C) 27 D)

6 626 1 Page 6 6) 61) 62) Which of the folloig is the electro cofigurato of a calcium atom i the excited state? A) 2882 B) 2873 C) 24 D) 231 Which represets the electro cofigurato of a silver atom i the excited state? A). 277 C) B) D) A atom of a elemet has th electro cofiguratio ij22.s22p2. What is the total umber of valece electros i this atom? A) 6 B) 2 C) 5 D) 4 Which electro cofiguratio represets a atom i a excited state? 64) 66) 67) 68) A) 1J22J22..z;.63J23p2 C) IJ22J22..z;.63pl B) 1J22J22..z;.63J2 D) 1J22J22..z;.63J23p1 I a atom, the s sublevel has A) 5 otbitals C) 1 otbital B) 7 otbitals D) 3 otbitals A atom has 8 electros i a dsublevel. Ho may dotbitals i this sublevel are halffilled? A) 1 B) 2 C) 3 D) 4 I hich sublevel ould a electro have the /iig/ies/eergy? A) 4/ B) 4s C) 4d D) 4p Which electro cofiguratio cotais three halffilled otbitals? A) 1J22J22..tA C) IJ22J22..z;.6 B) 1.;2.2p5 D) 1.s.22.s22p? Which electro otatio represets the valece electros of a phosphorus atom i the groud state? A) [][][] C)!IIJ[]O 'y.i ",.I P P B) [1!]f'f1ffTl WJ D s 'y_j p. D) [I] [111[f1] CJ s '= y.;..j \ I;:;';;'p

7 69) Page 7 Which of the folloig is the omital otatio for the electros i the third pricipal eergy level of a argo atom i the groud state? 3p 3d A) 35,.A.,, '"' '1IJJIllIIllIIllIIllIIllIIllIIllIIllI B) C) D) 3 3p. i. d Of:' [ijfijj[j"[ ][]i[][ji::5[] 3p 3d ufi::jit)[: ][[j"'[t][jffjej 3p 3d [ijfijjjfijli f:]e]ijr5[j 7) Which omitai otatio represets a atom ofberyum i the groud state? 2p A) r.a " C) r.a. " [JD[J[J[J B) D) [ij lib 2p [JliJ[JliJD 2p 1s 2s, A 1t][][]DD 71) Which ojbital otatio represets a atom i the groud state id! 6 valece electros? A)!IJ Imlmlm C) 1ill1m!IJ!IJ s ' y " s ' y' p p B) [ill I:O[fJO S 'y_j P D) [ill [ill [ill S "'y' D P 72) Which diagram correctly represets a atom of fluorie i a excited state? B) D)

8 626 1 Page 8 73) The questios belo refer to a atom of silico. (a) Ho may protos are i the ucleus of a silico atom? (b' Write the electro cofiguratio for a atom of silico i the groud state. (c) Dra a Leis electrodot diagram for a atom of silico. (d) Ho does a atom of silico become a Si4 io? (e) What oble gas has the same electro cofiguratio as Si4? _74) The questios belo refer to a eutral atom i the groud state havig the electro cofiguratio 27. (a) Name the elemet ith this electro cofiguratio. (b) Ho may protos are cotaied i the ucleus of this atom? (c) Ho may valece electros does this elemet cotai? (d) What pricipal eergy level do the valece electros occupy? (e) Write a possiblelectro cofiguratio for this atom i the excited state.

9 75) The questios belo refer to a atom that has 17 protos, 19 eutros, ad 17 electros. (a) What is the atomic umber of this atom? (b) What is the mass umber of this atom? (c) Write the electro cofiguratio for this atom. (d) Idetify the atom. (e) Dra a correct Leis electrodot diagram for the atom Page 9 76) Give the folloig Leis electrodot diagram: Name three elemets that could be elemet X...x.. 77) Give the folloig Leis electrodot diagram:..x. Name IlIree elemets that could be elemet X

10 .! a tj a.. VI. '! Ṉ,!... = = :s!... 1 ''.9 () W 1 1'\ $ W I» =..,..,.. Q ';S.. \..2 a u. " Ṉ "".:;j t'\ V\ m.9..oj c r9 ttj J c< = 'f:.,. c "" :;!J (") (') i 9 rt1! CI)! I..z. J4 CI).a" 'oj a : '' :g."':1 "g:. ''.: N I I t Q, '' 9: So ft. "it' ''. ::.. \oft \1 ai '".:;:J VI ::2: t/»f I ;. t"" 9. t "QI j Z.... t/)e......s,.. \A "" """ = VI.s ;:;t... N &. "" rd ". : '< i. 5 <;., (').\Q N '"' c it '" N \.It "' a N (')...:! oj Q = A1 q g